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AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorSatoru FUKASE
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A magnetic disk device according to an embodiment includes a magnetic disk, a magnetic head, and a controller. On the magnetic disk, tracks including a first track and a second track are provided. The second track is radially adjacent to the first track and is subjected to writing prior to the first track. The first/second tracks each include data sectors. The data sectors include a data sector in which a parity is stored. The parity is an error correction code for error correction in units of track. The controller controls the magnetic head when performing reading and writing on the data sector in response to a command from a host. The controller dynamically allocates the parity in a case where there is a possibility that the data sector causes an error when the magnetic head performs reading and writing on the data sector.
A magnetic disk device connected to a host, the magnetic disk device comprising:
A data recording method implemented by a magnetic disk device, the magnetic disk device including a magnetic disk on which tracks including a first track and a second track are provided, the second track being radially adjacent to the first track and being subjected to writing prior to the first track, the first track and the second track each including data sectors, the data sectors includes a data sector in which a parity is stored, the parity being an error correction code for error correction in units of track, the data recording method comprising:
Dependencies are inferred from the claim text.